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PDF LM3150 Data sheet ( Hoja de datos )

Número de pieza LM3150
Descripción SIMPLE SWITCHER CONTROLLER
Fabricantes National Semiconductor 
Logotipo National Semiconductor Logotipo



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No Preview Available ! LM3150 Hoja de datos, Descripción, Manual

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October 17, 2008
LM3150
SIMPLE SWITCHER® CONTROLLER, 42V Synchronous
Step-Down
General Description
The LM3150 SIMPLE SWITCHER® Controller is an easy to
use and simplified step down power controller capable of pro-
viding up to 12A of output current in a typical application.
Operating with an input voltage range of 6V-42V, the LM3150
features an adjustable output voltage down to 0.6V. The
switching frequency is adjustable up to 1 MHz and the syn-
chronous architecture provides for highly efficient designs.
The LM3150 controller employs a Constant On-Time (COT)
architecture with a proprietary Emulated Ripple Mode (ERM)
control that allows for the use of low ESR output capacitors,
which reduces overall solution size and output voltage ripple.
The Constant On-Time (COT) regulation architecture allows
for fast transient response and requires no loop compensa-
tion, which reduces external component count and reduces
design complexity.
Fault protection features such as thermal shutdown, under-
voltage lockout, over-voltage protection, short-circuit protec-
tion, current limit, and output voltage pre-bias startup allow for
a reliable and robust solution.
The LM3150 SIMPLE SWITCHER® concept provides for an
easy to use complete design using a minimum number of ex-
ternal components and National’s WEBENCH® online design
tool. WEBENCH® provides design support for every step of
the design process and includes features such as external
component calculation with a new MOSFET selector, electri-
cal simulation, thermal simulation, and Build-It boards for
prototyping.
Features
PowerWise® step-down controller
6V to 42V Wide input voltage range
Adjustable output voltage down to 0.6V
Programmable switching frequency up to 1 MHz
No loop compensation required
Fully WEBENCH® enabled
Low external component count
Constant On-Time control
Ultra-fast transient response
Stable with low ESR capacitors
Output voltage pre-bias startup
Valley current limit
Programmable soft-start
Typical Applications
Telecom
Networking Equipment
Routers
Security Surveillance
Power Modules
Typical Application
SIMPLE SWITCHER® is a registered trademark of National Semiconductor Corporation
© 2008 National Semiconductor Corporation 300531
30053101
www.national.com
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LM3150 pdf
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Simplified Block Diagram
30053103
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LM3150 arduino
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Inductor Designator
L01
L02
L03
L04
L05
L06
L07
L08
L09
L10
L11
L12
L13
L14
L15
L16
L17
L18
L19
L20
FIGURE 2. Inductor Nomograph
30053152
Inductance
(µH)
47
33
22
15
10
6.8
4.7
3.3
2.2
1.5
1
0.68
33
22
15
10
6.8
4.7
3.3
2.2
TABLE 1. Inductor Selection Table
Current
(A)
7-9
7-9
7-9
7-9
7-9
7-9
7-9
7-9
7-9
7-9
7-9
7-9
9-12
9-12
9-12
9-12
9-12
9-12
9-12
9-12
Part Name
SER2817H-333KL
SER2814H-223KL
7447709150
RLF12560T-100M7R5
B82477-G4682-M
B82477-G4472-M
DR1050-3R3-R
MSS1048-222
SRU1048-1R5Y
DO3316P-102
DO3316H-681
SER2918H-223
SER2814H-153KL
7447709100
SPT50H-652
SER1360-472
MSS1260-332
DR1050-2R2-R
Vendor
COILCRAFT
COILCRAFT
WURTH
TDK
EPCOS
EPCOS
COOPER
COILCRAFT
BOURNS
COILCRAFT
COILCRAFT
COILCRAFT
COILCRAFT
WURTH
COILCRAFT
COILCRAFT
COILCRAFT
COOPER
11
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